Fig. 7

The insertion sites of different Pcls in the coding region of 61 Basidiomycete cox1 genes and the conservative analysis of the sequence around the insertion sites (− 15 bp – 15 bp). The symbols “+ 1” and “+ 2” indicate that the insertion of the intron occurs inside the indicated codon: between the nt 1 and nt 2 of this codon for “+ 1” and between the nt 2 and nt 3 for “+ 2”